The tablet only has wireless. We did reload the driver and made sure it was the newest one. The server continue to respond to pings, but that is a different port than the one it is failing on. However does tell me that at least we do have internet connectivity.

I'd still suspect the network card, but the only way to tell is to connect to an business grade WAP and view the packet stats. If you have a lot of malformed packets it is most likely the network card.